- 623
- 22 291
ChemMisterLee
United States
เข้าร่วมเมื่อ 17 มี.ค. 2012
Interactive Example 7.4 – Energy Quantization in Hydrogen
Playlist: th-cam.com/play/PLgZJChhyqf9NDg2fEYN8-sSCobe2VSPcc.html&si=9qojSL29NQkJP5aZ
Playlist: th-cam.com/play/PLgZJChhyqf9MILXLbmyPy4pYmxB8pz5Rk.html
Playlist: th-cam.com/play/PLgZJChhyqf9N0f4tm-D68RtTWSJwpLy_i.html
Calculate the energy required to excite the hydrogen electron from level n = 1 to level n = 2. Also calculate the wavelength of light that must be absorbed by a hydrogen atom in its ground state to reach this excited state.
Playlist: th-cam.com/play/PLgZJChhyqf9MILXLbmyPy4pYmxB8pz5Rk.html
Playlist: th-cam.com/play/PLgZJChhyqf9N0f4tm-D68RtTWSJwpLy_i.html
Calculate the energy required to excite the hydrogen electron from level n = 1 to level n = 2. Also calculate the wavelength of light that must be absorbed by a hydrogen atom in its ground state to reach this excited state.
มุมมอง: 11
วีดีโอ
Interactive Example 7.2 - The Energy of a Photon
มุมมอง 79 ชั่วโมงที่ผ่านมา
Playlist: th-cam.com/play/PLgZJChhyqf9NDg2fEYN8-sSCobe2VSPcc.html&si=9qojSL29NQkJP5aZ Playlist: th-cam.com/play/PLgZJChhyqf9MILXLbmyPy4pYmxB8pz5Rk.html Playlist: th-cam.com/play/PLgZJChhyqf9N0f4tm-D68RtTWSJwpLy_i.html The blue color in fireworks is often achieved by heating copper(I) chloride (CuCl) to about 1200°C. Then the compound emits blue light having a wavelength of 450 nm. What is the i...
Interactive Example 7.1 - Frequency of Electromagnetic Radiation
มุมมอง 79 ชั่วโมงที่ผ่านมา
Playlist: th-cam.com/play/PLgZJChhyqf9NDg2fEYN8-sSCobe2VSPcc.html&si=9qojSL29NQkJP5aZ Playlist: th-cam.com/play/PLgZJChhyqf9MILXLbmyPy4pYmxB8pz5Rk.html Playlist: th-cam.com/play/PLgZJChhyqf9N0f4tm-D68RtTWSJwpLy_i.html The brilliant red colors seen in fireworks are due to the emission of light with wavelengths around 650 nm when strontium salts such as Sr(NO₃)₂ and SrCO₃ are heated. (This can be...
#83 - Bohr’s Atomic Theory
มุมมอง 1512 ชั่วโมงที่ผ่านมา
Playlist: th-cam.com/play/PLgZJChhyqf9NDg2fEYN8-sSCobe2VSPcc.html&si=9qojSL29NQkJP5aZ Playlist: th-cam.com/play/PLgZJChhyqf9MILXLbmyPy4pYmxB8pz5Rk.html Chapter 5, Problem 83: Bohr’s atomic theory can be used to calculate the energy required to remove an electron from an orbit of a hydrogen atom or an ion containing only one electron. This number is the ionization energy for that atom or ion. Th...
#82 - How long would it take to transmit television pictures from Mars to Earth?
มุมมอง 5512 ชั่วโมงที่ผ่านมา
Playlist: th-cam.com/play/PLgZJChhyqf9NDg2fEYN8-sSCobe2VSPcc.html&si=9qojSL29NQkJP5aZ Playlist: th-cam.com/play/PLgZJChhyqf9MILXLbmyPy4pYmxB8pz5Rk.html Chapter 5, Problem 82: The average distance between Earth and Mars is about 2.08 x 10⁸ km. How long would it take to transmit television pictures from Mars to Earth?
#81 - Complete the Table, Plot Energy vs Frequency, Determine the Slope
มุมมอง 2214 ชั่วโมงที่ผ่านมา
Playlist: th-cam.com/play/PLgZJChhyqf9NDg2fEYN8-sSCobe2VSPcc.html&si=9qojSL29NQkJP5aZ Playlist: th-cam.com/play/PLgZJChhyqf9MILXLbmyPy4pYmxB8pz5Rk.html Chapter 5, Problem 81: The energy of a photon is related to its frequency and its wavelength. a) Complete the table above. b) Plot the energy of the photon (y-axis) versus the frequency (x-axis). c) Determine the slope of the line. d) What is th...
Photoelectric Effect - Calculating Kinetic Energy (KE) given Work Function and Energy of Photon
มุมมอง 814 ชั่วโมงที่ผ่านมา
Playlist: th-cam.com/play/PLgZJChhyqf9NDg2fEYN8-sSCobe2VSPcc.html&si=9qojSL29NQkJP5aZ Playlist: th-cam.com/play/PLgZJChhyqf9MILXLbmyPy4pYmxB8pz5Rk.html Playlist: th-cam.com/play/PLgZJChhyqf9N0f4tm-D68RtTWSJwpLy_i.html The work function (energy required to eject its electrons) for gold is 8.171 x 10⁻¹⁹ J. Part A: An incoming light with energy = 6.409 x 10⁻¹⁹ J strikes the surface of a gold plate...
Photoelectric Effect Problem - Solving for Energy, Frequency, Wavelength given Work Function and KE
มุมมอง 1516 ชั่วโมงที่ผ่านมา
Playlist: th-cam.com/play/PLgZJChhyqf9NDg2fEYN8-sSCobe2VSPcc.html&si=9qojSL29NQkJP5aZ Playlist: th-cam.com/play/PLgZJChhyqf9MILXLbmyPy4pYmxB8pz5Rk.html Playlist: th-cam.com/play/PLgZJChhyqf9N0f4tm-D68RtTWSJwpLy_i.html A certain light strikes a metal surface. The metal has a work function (energy required to eject its electrons) of 6.889 x 10⁻¹⁹ J. Electrons are ejected with a kinetic energy of ...
Calculate the frequency and energy of each line
มุมมอง 1416 ชั่วโมงที่ผ่านมา
Playlist: th-cam.com/play/PLgZJChhyqf9NDg2fEYN8-sSCobe2VSPcc.html&si=9qojSL29NQkJP5aZ Playlist: th-cam.com/play/PLgZJChhyqf9MILXLbmyPy4pYmxB8pz5Rk.html Calculate the frequency and energy of each line.
An unknown element produced the following emission spectra. Which electronic transition...
มุมมอง 3916 ชั่วโมงที่ผ่านมา
Playlist: th-cam.com/play/PLgZJChhyqf9NDg2fEYN8-sSCobe2VSPcc.html&si=9qojSL29NQkJP5aZ Playlist: th-cam.com/play/PLgZJChhyqf9MILXLbmyPy4pYmxB8pz5Rk.html Playlist: th-cam.com/play/PLgZJChhyqf9N0f4tm-D68RtTWSJwpLy_i.html An unknown element produced the following emission spectra. Which electronic transition most likely produced the visible red light?
#72 - Calculate the following energies given wavelengths
มุมมอง 2116 ชั่วโมงที่ผ่านมา
Playlist: th-cam.com/play/PLgZJChhyqf9NDg2fEYN8-sSCobe2VSPcc.html&si=9qojSL29NQkJP5aZ Playlist: th-cam.com/play/PLgZJChhyqf9MILXLbmyPy4pYmxB8pz5Rk.html Chapter 5, Problem 72: Calculate the following energies: a) One photon of infrared radiation, if λ = 1.2 x 10⁻⁴ m. b) One photon of visible radiation, if λ = 5.1 x 10⁻⁷ m. c) One photon of ultraviolet radiation, if λ = 1.4 x 10⁻⁸ m. What do the ...
#71 - You use a microwave oven to heat your dinner. What is the energy of this radiation?
มุมมอง 15216 ชั่วโมงที่ผ่านมา
Playlist: th-cam.com/play/PLgZJChhyqf9NDg2fEYN8-sSCobe2VSPcc.html&si=9qojSL29NQkJP5aZ Playlist: th-cam.com/play/PLgZJChhyqf9MILXLbmyPy4pYmxB8pz5Rk.html Chapter 5, Problem 71: You use a microwave oven to heat your dinner. The frequency of the radiation is 2.37 x 10⁹ s⁻¹. What is the energy of one photon of this radiation?
#66 - Calculating Energy of a Photon given Wavelength
มุมมอง 2916 ชั่วโมงที่ผ่านมา
Playlist: th-cam.com/play/PLgZJChhyqf9NDg2fEYN8-sSCobe2VSPcc.html&si=9qojSL29NQkJP5aZ Playlist: th-cam.com/play/PLgZJChhyqf9MILXLbmyPy4pYmxB8pz5Rk.html Chapter 5, Problem 66: Calculate the energy of a photon of red light with a wavelength of 6.45 x 10⁻⁵ cm. Compare your answer with the answer to Question 52. Is red light of higher or lower energy than green light?
#65 - Photoelectric Effect
มุมมอง 1316 ชั่วโมงที่ผ่านมา
Playlist: th-cam.com/play/PLgZJChhyqf9NDg2fEYN8-sSCobe2VSPcc.html&si=9qojSL29NQkJP5aZ Playlist: th-cam.com/play/PLgZJChhyqf9MILXLbmyPy4pYmxB8pz5Rk.html Chapter 5, Problem 65: What will happen if the following occur? a) Monochromatic light shining on cesium metal is just above the threshold frequency. b) The intensity of the light increases, but the frequency remains the same. c) Monochromatic l...
#64 - Calculating Wavelength, Frequency, Region of Visible Spectrum
มุมมอง 2716 ชั่วโมงที่ผ่านมา
Playlist: th-cam.com/play/PLgZJChhyqf9NDg2fEYN8-sSCobe2VSPcc.html&si=9qojSL29NQkJP5aZ Playlist: th-cam.com/play/PLgZJChhyqf9MILXLbmyPy4pYmxB8pz5Rk.html Chapter 5, Problem 64: Sodium vapor lamps are used to illuminate streets and highways. The very bright light emitted by these lamps is actually due to two closely spaced emission lines in the visible region of the electromagnetic spectrum. One o...
#63 - A mercury lamp, such as the one below, emits radiation with a wavelength of 4.36 x 10⁻⁷ m.
มุมมอง 6421 ชั่วโมงที่ผ่านมา
#63 - A mercury lamp, such as the one below, emits radiation with a wavelength of 4.36 x 10⁻⁷ m.
#62 - Suppose your favorite AM radio station broadcasts at a frequency of 1150 kHz.
มุมมอง 1721 ชั่วโมงที่ผ่านมา
#62 - Suppose your favorite AM radio station broadcasts at a frequency of 1150 kHz.
#52 - Calculating the Energy of a Photon
มุมมอง 1621 ชั่วโมงที่ผ่านมา
#52 - Calculating the Energy of a Photon
Sample Problem - Calculating the Energy of a Photon
มุมมอง 1921 ชั่วโมงที่ผ่านมา
Sample Problem - Calculating the Energy of a Photon
#25 - What is the energy of a photon of blue light with a wavelength of 460 nm?
มุมมอง 25วันที่ผ่านมา
#25 - What is the energy of a photon of blue light with a wavelength of 460 nm?
#24 - Calculate Frequency given Wavelength
มุมมอง 14วันที่ผ่านมา
#24 - Calculate Frequency given Wavelength
#18 - Calculate energy of photon, given wavelength
มุมมอง 47วันที่ผ่านมา
#18 - Calculate energy of photon, given wavelength
#17 - Calculate the energy of a quantum of radiant energy with a frequency of 5.00 x 10¹¹ /s.
มุมมอง 23วันที่ผ่านมา
#17 - Calculate the energy of a quantum of radiant energy with a frequency of 5.00 x 10¹¹ /s.
Sample Problem 5.3 - Calculating the Energy of a Photon
มุมมอง 26วันที่ผ่านมา
Sample Problem 5.3 - Calculating the Energy of a Photon
#16 - Calculate frequency of radiation given a wavelength.
มุมมอง 19วันที่ผ่านมา
#16 - Calculate frequency of radiation given a wavelength.
Sample Problem - Calculating the Frequency of Light
มุมมอง 27วันที่ผ่านมา
Sample Problem - Calculating the Frequency of Light
Sample Problem 5.2 - Calculating the Wavelength of Light
มุมมอง 25วันที่ผ่านมา
Sample Problem 5.2 - Calculating the Wavelength of Light
#42 - Assume silicon has three major isotopes in nature...Fill in the missing information.
มุมมอง 2214 วันที่ผ่านมา
#42 - Assume silicon has three major isotopes in nature...Fill in the missing information.
#41 - The element rhenium (Re) has two naturally occurring isotopes... Calculate the mass of ¹⁸⁵Re.
มุมมอง 2014 วันที่ผ่านมา
#41 - The element rhenium (Re) has two naturally occurring isotopes... Calculate the mass of ¹⁸⁵Re.
👍🏻
0:25 - should be "atomic number" not "atomic mass"
Nice videos, Really helpful! Keep up the good work🔥
thank you <3
answer should be in units of μm (micrometers)
a. is 2.6 m² (not 2.5 m²)
final answer should have units of cubic meters (m³)
Correction @0:45 - I meant to say "melting point" (not "boiling point")
Correction @5:30 moving the decimal to the left 3 times is the same thing as dividing by 1,000 (not 100). 1kJ =1,000 J
I copied the mass incorrectly. Mass should be 96.1g. Final answer should be 44.4g/mol.
Distiller all the way. It’s the easiest and best quality. I use the cheapest one and it still puts out 0-1ppm. I use a 4hr timer with mine. This way there is always a tiny bit at the bottom when done. I can go a month or two with every day use before cleaning
Thanks for the tip! You can also leave the top open for a few seconds after boiling pt reached to remove the chorine and other substances with lower boiling pts than water.
soak the filter for a day better yet toss it in the garbage and go with your distiller
@26:18 denominator should read (0.01M²) (0.1M) i.e. - if you square (0.1M)², you get → 0.01M²
@3:55 the last conversion factor in green should be PH₃, not PH₄. Good catch Carlton!
Very helpful. Thanks a lot
Joe Josh! Is that you?
at 14:10 molar mass of nitrogen x 2 is 28g/mol, not 48g/mol. Final answer should be 8.80 mol.
'Promosm' ❗
Omg slay bestie 💅💅💅❤️❤️❤️❤️
slayyyyy girllieeeee 💅💅👑👑👑
slayyyyy girllieeeee 💅💅👑👑👑
slayyyyy girllieeeee 💅💅👑👑👑
slayyyyy girllieeeee 💅💅👑👑👑
slayyyyy girllieeeee 💅💅👑👑👑
slayyyyy girllieeeee 💅💅👑👑👑
slayyyyy girllieeeee 💅💅👑👑👑